It depends how you measure intelligence. Because you get people with phds at the very peak of knowledge in their specialised subject that can barely tie their own shoelaces. I know someone who could tell you anything you ever wanted to know about ancient languages but can barely function day to day. He has to write lists for absolutely everything he has to do. I’m not talking about things like “dentist at 10:30”, I’m talking about “get up” and “wash” and “eat” because he can’t remember to do them otherwise. Is he really intelligent, or does he have a natural aptitude for language? Or has he just put the hours in? Unless there’s a question in Aramaic, he’s shite at pub quiz nights too. Never again!